So, I don't really track hashtag on twitter, but in the night this happaned "#IBelieveInTomHiddleston".

From what I understood, some fangirl/s found out about the bicycle site, offended in every possible pore she/they created an hashtag to prove or contest it - clever, a site a few hundreds knew now has now increased its popularity - but someone went as fare as DM Amanda Abbington about it and posted a screencap of her reply.
https://twitter
.com/buckysbae/status/553331477266825216