1. SharedTalk (by Rosetta Stone)
It features a voice chat facility where you can talk to another member who speaks your target language(s) instantly if he's online. Alternatively, you can have text chats with them. For me, this site is the best place to find language exchange partners.
Short articles with audio (in which some vocabulary is explained) are published periodically. These are like short Spanish lessons. You need to know the Spanish language quite a bit (perhaps at intermediate level or above) to benefit from it.
3. LingQ
This site contains a large number of free podcasts (with transcripts) from different sources and in various languages like Spanish, Portuguese, German, Japanese, Mandarin and Swedish. Additional features include writing correction by and conversations with tutors. You may need to buy credit points for these services.
The above websites alone are by no means sufficient for learning a foreign language to fluency. However, they are good supplements to your learning materials. See resources in my website for more listing.
