Yes there is. Just hit the "Subscriptions" link below the header.
Subscribing members are not served ads, and there are several other user friendly perks that come with being a subscribing member which you will find listed in the link. Plus, it really helps the site stay afloat.
I rarely promote it other than when we do a site fundraiser, but it's been about 3 or 4 years since we did one of those. I did one for my daughter when her spouse passed suddenly a couple years ago, which went very well, thanks to the generous membership here. However, we have had a rather large reduction in subscribers over the last few years, and really need to pick up those numbers, but I sure wasn't going to bother people during this Covid mess, and I really don't like bugging people for funding.