SPBot is a bot for website Open Link Profiler or SEOprofiler. SEOprofiler is a backlink tracker and has the following to say about its bot: OpenLinkProfiler.org offers information about the inbound links of websites. It answers the question: Who links to whom on the Internet? To get this kind of information, OpenLinkProfiler.org uses a web crawler with the name spbot. Basically, it starts with a list of known URLs from across the entire Internet, then it fetches local links found as it goes. There are several advantages to this approach, most importantly that it creates the least possible disruption to the sites being crawled. From the many backlink trackers there are on the internet, this is one of the best, most thorough websites out there!
The Internet of Bots has evaluated SPBot against 50 different checkpoints, of which 44 have been confirmed as being positive. These checkpoints evaluate the transparency and occurrence of a bot and don´t necessarily say something about its quality. The BotRank is calculated as [44*2=] 88%. The details of the bot and the BotRank can be seen below. For more information on how the BotRank is made, you can visit the page Botrank.