Heart icon on my posts?

[Johnnytheboy]

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Link above is an example - see my last post. Occasionally when posting from my tablet I get the heart icon like this thread has, having not requested it.

Curiously if I go back to edit the post the heart icon isn't selected.

What's going on?

[0a]

It looks lovely

[Kiltie]

[Johnnytheboy]

Anyone any idea why, as delightful as it looks?