Recently Google announced 50 more changes in search algorithm after 40 search quality changes in the month of February and 17 search changes in January.
Every Change done by Google only to increase the quality of search results.
Here is the Full List of Google Search Quality Updates
1 Autocomplete with math symbols.
2 Improvements to handling of symbols for indexing.
3 Better scoring of news groupings.
4 Sitelinks data refresh.
5 Improvements to autocomplete backends, coverage.
6 Better handling of password changes.
7 Better indexing of profile pages.
8 UI refresh for News Universal.
9 Improvements to results for navigational queries.
10 High-quality sites algorithm data update and freshness improvements.
11 Live results for UEFA Champions League and KHL.
12 Tennis search feature.
13 More relevant image search results.
14 Fresher image predictions in all languages.
15 SafeSearch algorithm tuning.
16 Tweaks to handling of anchor text.
17 Simplification to Images Universal codebase.
18 Better application ranking and UI on mobile.
19 Improvements to freshness in Video Universal.
20 Fewer undesired synonyms.
21 Better handling of queries with both navigational and local intent.
22 Improvements to freshness.
23 Improvements to processing for detection of site quality.
24 Better interpretation and use of anchor text.
25 Better local results and sources in Google News.
26 Deprecating signal related to ranking in a news cluster.
27 Fewer “sibling” synonyms.
28 Better synonym accuracy and performance.
29 Retrieval system tuning.
30 Less aggressive synonyms.
31 Update to systems relying on geographic data.
32 Improvements to name detection.
33 Updates to personalization signals.
34 Improvements to Image Search relevance.
35 Remove deprecated signal from site relevance signals.
36 More precise detection of old pages.
37 Tweaks to language detection in autocomplete.
38 Improvements in date detection for blog/forum pages.
39 More predictions in autocomplete by live rewriting of query prefixes.
40 Expanded sitelinks on mobile.
41 More accurate short answers.
44 Migration of video advanced search backends.
45 +1 button in search for more countries and domains.
46 Local result UI refresh on tablet.
Few changes earlier by Google and blogged too
- Flights to worldwide destinations
- Redesigned Search App for Windows 7.5 phones
- SSL search around the globe
- “Recent” feature on mobile
- Full-page themes in iGoogle
- March Madness NCAA search feature
- 3D graphing calculator
In these search updates by Google, Matt McGee highlight the few most important updates in his article on Search Engine land.