The summary is a bit misleading. Google has been indexing the textual parts of PDFs for a long time. According to the article they have now started indexing scans inside of PDF files, which requires OCR.

Google has been doing that for catalogs for a while now, but OCRing large numbers of scans obviously requires a lot more resources.

Yes, they called themselves that. Still, they weren't socialist, they were fascist. Same as in commercials, the labels aren't always correct. The Nazis weren't about class struggle (they were about struggle between peoples), and they didn't want to make all property public in the long term. And so on. Get Haffner's book on Hitler for a readable introduction on what the Nazis wanted and didn't want. Some goals developed over the twelve years of their rule, other things they publicly demanded and still didn't do, it's not that simple.

There are extremists of both wings that are very much into government and those that are against it.

The terms right and left are not well-defined.

Both parties have almost nothing in common with the Nazis, so that comparison just doesn't make any sense.

Get a well-maintained news server and there'll hardly be any spam. Unfortunately, such a thing is hard to find, there isn't really any money in text newsgroups, and regular ISPs continue to give up on Usenet altogether and recommend Google Groups (which is a cruel joke). Individual seems to be one of the remaining good servers, for EUR 10 per year, but it has a dedicated team behind it. For technical things like programming languages or databases, Usenet groups in comp.* are still great.