This isn't an ordinary collection of links.  This is links to useful, no ad, how-to content, that was put on the web by the creators of the content, not some paid content writer for sucking ad revenue out of google hits.  I put this up mainly for me, because I loose bookmarks, and I forget where this stuff is.  Useful sites like tadalist or bookmark machines can be used, but this way just feels right.
Accurate straight edges from scratch