Hello again,
There's all these ''Vimax'' ads at each site I go to, nowhere else. Even on this site!

1.Do you guys see it, or is it just me?
2.Do you see it on this website?
3.Is this type of thing harmful?
4.If so, what can I do?

Never seen any ads for that on any site, especially here. Sounds like you have malware on your computer. Follow the steps given HERE except using DSS scanner as it is no longer available. Substitute instead with a finish with HiJackThis.
Before you download HJT create a new folder on the desktop and name it HJT. Then download HJT to that folder.
Especially be certain you use ATF-Cleaner before you begin running all the steps and be sure to install, update and run Malwarebytes' Anti-Malware and let it fix all it finds. Finish up with a Full System scan with HJT.
Post back here with all requested logs and we will see if other steps are required.
Judy

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