Out of curiosity, I logged into LinkWorth to see how much a link on every page within pfblogs.org would go for. Take a look at the results and see for yourself:

Their estimates may be a little high, but here’s the skinny. A link on every page within pfblogs.org, which is what we give our Friends, can go for up to $145 a month! This is significantly more than my own blog can generate on a per link per month basis.
So what does this mean? It means the Friends of pfblogs.org are getting a great deal if they are considering search engine optimization. Friends who partnered early on in pfblogs.org got the best deal, but for a long time now, Friends have been paying only $2.00 a month for premium listing. Commercial members have been paying $35.00 a month. Those prices are locked in for lifetime.
As you may know, prices for Commercial membership in the Friends is increasing on October 1 to $50.00 per month. This is still a great deal, according to LinkWorth.
Non-commercial membership in the Friends of pfblogs.org will be increasing to $4.99 per month, for new members, starting November 1. There are many benefits to being a Friend of pfblogs.org (more info here), but if you’re serious about your non-commercial, non-spam, non-affiliate-whore personal finance, investing, or real estate blog, this is the place to be listed, and October will be the last month to sign up for the bargain-basement rate of $2.00 a month.
All current non-commercial Friends as of October 31, including those who donated during our Annual fundraiser earlier this year, have the opportunity of renewing or extending their membership at any time for $2.00 a month. If renewing early, additional months will be added to the end of the membership.
I still think you should consider ads…
But I do like ad-free…Thanks for all your work Flexo!
[...] If you have not become a member of the Friends of pfblogs.org yet and you’ve been meaning too, don’t forget that the monthly price will be raising for non-commercial members on November 1. The link to your blog itself is worth $110 to $145 according to LinkWorth, and non-commercial Friends get the link plus a lot more for only $4.99 a month. [...]
Of course, the link wouldn’t be worth jack if all of the participating blogs hadn’t linked to pfblogs.org in the first place…