I don't think it makes sense to put tags on nodes for mega-imports. This adds tons of extraneous information that fills up the database quite quickly. It also increases the size of OSM file downloads by a large margin<br>
<br>Is it really a good idea to attribute each node? Let's stick with attribution on ways. If we're really worried about it, we could do mass imports with a specific user and give that user a wiki page to describe where the data came from.<br>
<br>...discuss...<br>