Bütün bot`lara indexleme izni vermek dogrumudur ??

Merhaba benim sormak istedigim bot`lar hakkinda robots.txt dosyasina
#ALL BOTS
User-agent: *

diyip bütün botlarin konularimizi indexlemesine izin eriyoruz acaba burda dogru bir ismi yapiyoruz bütün botlar iyi huylumudur spam amacli kullanilan botlar yokmudur acaba sadece google ve yahoo ya izin vermek daha mantikli olmazmi ??

Spam botları ayıklayabiliyorsanız elbette onlara izin vermeme imkanınız var.

spam bot lar diye sunulan bir liste varmi acaba r10 `a ait robots.txt dosyasini inceledigimde su sekilde bir listeyle karsilasiyorum bu listedekileri spam bot olarakmi algilamaliyim?

HTML Code:

User-agent: *
Disallow: /?ref=

User-agent: HTTrack
Disallow: /

User-agent: grub-client
Disallow: /

User-agent: grub
Disallow: /

User-agent: looksmart
Disallow: /

User-agent: WebZip
Disallow: /

User-agent: larbin
Disallow: /

User-agent: b2w/0.1
Disallow: /

User-agent: psbot
Disallow: /

User-agent: Python-urllib
Disallow: /

User-agent: NetMechanic
Disallow: /

User-agent: URL_Spider_Pro
Disallow: /

User-agent: CherryPicker
Disallow: /

User-agent: EmailCollector
Disallow: /

User-agent: EmailSiphon
Disallow: /

User-agent: WebBandit
Disallow: /

User-agent: EmailWolf
Disallow: /

User-agent: ExtractorPro
Disallow: /

User-agent: CopyRightCheck
Disallow: /

User-agent: Crescent
Disallow: /

User-agent: SiteSnagger
Disallow: /

User-agent: ProWebWalker
Disallow: /

User-agent: CheeseBot
Disallow: /

User-agent: LNSpiderguy
Disallow: /

User-agent: ia_archiver
Disallow: /

User-agent: ia_archiver/1.6
Disallow: /

User-agent: Teleport
Disallow: /

User-agent: TeleportPro
Disallow: /

User-agent: MIIxpc
Disallow: /

User-agent: Telesoft
Disallow: /

User-agent: Website Quester
Disallow: /

User-agent: moget/2.1
Disallow: /

User-agent: WebZip/4.0
Disallow: /

User-agent: WebStripper
Disallow: /

User-agent: WebSauger
Disallow: /

User-agent: WebCopier
Disallow: /

User-agent: NetAnts
Disallow: /

User-agent: Mister PiX
Disallow: /

User-agent: WebAuto
Disallow: /

User-agent: TheNomad
Disallow: /

User-agent: WWW-Collector-E
Disallow: /

User-agent: RMA
Disallow: /

User-agent: libWeb/clsHTTP
Disallow: /

User-agent: asterias
Disallow: /

User-agent: httplib
Disallow: /

User-agent: turingos
Disallow: /

User-agent: spanner
Disallow: /

User-agent: InfoNaviRobot
Disallow: /

User-agent: Harvest/1.5
Disallow: /

User-agent: Bullseye/1.0
Disallow: /

User-agent: Mozilla/4.0 (compatible; BullsEye; Windows 95)
Disallow: /

User-agent: Crescent Internet ToolPak HTTP OLE Control v.1.0
Disallow: /

User-agent: CherryPickerSE/1.0
Disallow: /

User-agent: CherryPickerElite/1.0
Disallow: /

User-agent: WebBandit/3.50
Disallow: /

User-agent: NICErsPRO
Disallow: /

User-agent: Microsoft URL Control - 5.01.4511
Disallow: /

User-agent: DittoSpyder
Disallow: /

User-agent: Foobot
Disallow: /

User-agent: WebmasterWorldForumBot
Disallow: /

User-agent: SpankBot
Disallow: /

User-agent: BotALot
Disallow: /

User-agent: lwp-trivial/1.34
Disallow: /

User-agent: lwp-trivial
Disallow: /

User-agent: BunnySlippers
Disallow: /

User-agent: Microsoft URL Control - 6.00.8169
Disallow: /

User-agent: URLy Warning
Disallow: /

User-agent: Wget/1.6
Disallow: /

User-agent: Wget/1.5.3
Disallow: /

User-agent: Wget
Disallow: /

User-agent: LinkWalker
Disallow: /

User-agent: cosmos
Disallow: /

User-agent: moget
Disallow: /

User-agent: hloader
Disallow: /

User-agent: humanlinks
Disallow: /

User-agent: LinkextractorPro
Disallow: /

User-agent: Offline Explorer
Disallow: /

User-agent: Mata Hari
Disallow: /

User-agent: LexiBot
Disallow: /

User-agent: Web Image Collector
Disallow: /

User-agent: The Intraformant
Disallow: /

User-agent: True_Robot/1.0
Disallow: /

User-agent: True_Robot
Disallow: /

User-agent: BlowFish/1.0
Disallow: /

User-agent: JennyBot
Disallow: /

User-agent: MIIxpc/4.2
Disallow: /

User-agent: BuiltBotTough
Disallow: /

User-agent: ProPowerBot/2.14
Disallow: /

User-agent: BackDoorBot/1.0
Disallow: /

User-agent: toCrawl/UrlDispatcher
Disallow: /

User-agent: WebEnhancer
Disallow: /

User-agent: suzuran
Disallow: /

User-agent: VCI WebViewer VCI WebViewer Win32
Disallow: /

User-agent: VCI
Disallow: /

User-agent: Szukacz/1.4 
Disallow: /

User-agent: QueryN Metasearch
Disallow: /

User-agent: Openfind data gathere
Disallow: /

User-agent: Openfind 
Disallow: /

User-agent: Xenu's Link Sleuth 1.1c
Disallow: /

User-agent: Xenu's
Disallow: /

User-agent: Zeus
Disallow: /

User-agent: RepoMonkey Bait & Tackle/v1.01
Disallow: /

User-agent: RepoMonkey
Disallow: /

User-agent: Microsoft URL Control
Disallow: /

User-agent: Openbot
Disallow: /

User-agent: URL Control
Disallow: /

User-agent: Zeus Link Scout
Disallow: /

User-agent: Zeus 32297 Webster Pro V2.9 Win32
Disallow: /

User-agent: Webster Pro
Disallow: /

User-agent: EroCrawler
Disallow: /

User-agent: LinkScan/8.1a Unix
Disallow: /

User-agent: Keyword Density/0.9
Disallow: /

User-agent: Kenjin Spider
Disallow: /

User-agent: Iron33/1.0.2
Disallow: /

User-agent: Bookmark search tool
Disallow: /

User-agent: GetRight/4.2
Disallow: /

User-agent: FairAd Client
Disallow: /

User-agent: Gaisbot
Disallow: /

User-agent: Aqua_Products
Disallow: /

User-agent: Radiation Retriever 1.1
Disallow: /

User-agent: Flaming AttackBot
Disallow: /

User-agent: Oracle Ultra Search
Disallow: /

User-agent: MSIECrawler
Disallow: /

User-agent: PerMan
Disallow: /

User-agent: searchpreview
Disallow: /

Doğrudur veya değildir inanın bilmiyorum o liste ancak ben şahsen Türkiye'de hiçbir webmaster sitesinde yayınlanan bilgilere güvenerek sitem üzerinde değişiklik yapmıyorum. Ondan dolayı onu kullanın veya kullanmayın keninlikle diyemem.

Yani spam botlar seklinde hazirlanmis bloke etmemiz gereken bir liste yok bu biraz siniz bozucu mesela benim forumdaki bir konu ile ilgili bi arama yapildiginda bu arkadaslar arama sonuclarinda google da cikiyorlar

örnek

Running results, exact matches - Tetal
gelibolu indir - Bilgi.com Arama Motoru