Don't know why on your phone it only happens with rolia. Rolia only uses ad services from Google and Taboola, both are of very good reputation and are used by serious media outlets. BTW, what OS and browser are you using?
-system;
2017-4-1(#10714673@0)
Still have no clue what it is. I myself use cellphone for rolia all the time,
-system;
2017-3-31{194}(#10711330@0)
haven't found any ads like that. I'll keep an eye open and keep checking in on cellphone. If possible, next time when you see it, could you take a picture and upload it to 站务讨论区? Thanks!