Forum Moderators: open
ROBOTS.TXT? No
All it took were image files. Page backgrounds, favicons, and photos. Is this the Chinese social networking site? I don't know for sure because the crawl was from New Zealand.
Abbreviated "TT", it is a web browser developed by Tencent, and based on the IE kernel and Trident. In 2008, it was the third most-used browser in China.
(For full annotations/footnotes, see Wikipedia's "Tencent Holdings Ltd [en.wikipedia.org]" page.)
Personally, and regardless of popularity, I think you gotta be nuts to intentionally install anything that's Chinese in origin. On our servers at least, hardly a nanosecond goes by that some Chinese-based Zombie isn't attacking us.
Anyway, back to the UA, a few older sightings. Note the trailing space after TencentTraveler:
dhcp0nnn.nic.resnet.group.upenn.edu
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; TencentTraveler ; .NET CLR 1.1.4322)
202.101.77.n <=China Telecom
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; TencentTraveler )
Re Wikipedia, etc.: I try to run apparently new/strange UAs through Google, or WW's Google search feature up top, to find out more before posting. (Sometimes I discover I've already posted about them;)