Look, I totally understand that you use ads. Alas, on mobile this ad approach is pretty bothersome. I believe donations are the future, coming from a perspective of seeing multiple sites taking the approach of both ads and donations.
You could for instance add a login function to the main site to keep track of which user is whom. Although I doubt that would be feasible. As such I would prefer it if it were less intrusive and better targeted ads, as in the past I have seen rather NSFW ads on this site. I understand you fixed that but it happened. The intrusiveness is prinarpri on my phone where the bottom ad isn't really working out as it overlaps content (that could be fixed by adding some padding at the bottom of the site but as I read prior you're working on a mobile site, which, as I know, takes a lot of time (especially for such a big and old site). Aside of that, an optional donation option for people who use AdBlock could help a bit out. Not everyone will donate but there are definitely people out there who will.