Shap

I wouldn't say any of these were necessarily done in the past year. But here are a few that come to mind (mostly for paysites). Some of these may seem stupid. But with hosting changes, affiliate program changes etc over the years simple things that should work you'll find may not be.

Making sure all typo domains are working and pointing to the right place. It wasn't long ago I found a few of our typo domains and the non www.domain.com not working. Stupid shit but easy money left on the table.

Make sure you are using all payment options your processing companies allow. Online Checks, Debit, Web900 are all a low % of total sales but it all adds up.

Make sure your decline process is set up so they hit a backup processor.

Make sure your cancel emails and cancellation process is optimized. There is money to be made there.

Emailing your ex members. Regularly emailing your ex-members is an easy way to get them back.

Properly managing your exit traffic.

Properly managing your mobile traffic

Optimize your join forms and join pages. This one isn't an easy or quick fix but it's an important one that adds huge long term $$$ when you hit the sweet spot. If you've only ever tried one join form (processor end) and one join page (your end) then you are missing out. Test test test. What you think works may not be what's best. Ccbill and Epoch provide fantastic stats to help you know what's doing best.

Another simple thing is make sure you are being paid by your sponsors. This one is a bitch when you have 200+ accounts. Today more than ever this is very important.