@Steve
You ask if I have had success at LingQ. I have had huge success at LingQ.
I had reached the point, working with a tutor, where I could understand basically everything she said, IF I knew the vocabulary. But my vocabulary was not very large. (Nicholas Brown says that one needs to know about 8,000 words to understand ordinary Russian speech. I knew about 3000, from my introductory classes.) And it was so frustrating, to understand so little. She would talk and talk, and I just sat there puzzled. And, yes, I could speak a bit, but I couldn’t understand her answers. So what’s the point of speaking?
Her method of teaching me vocabulary was to have me translate huge amounts of Russian text. She was quite set against using flash cards, or any kind of repetition. “Just translate,” she said. I was spending about 15 hours a week writing out English translations for Russian texts. (For about 2 years.) But I have a poor memory, and I realized, finally, that this was not working for me. Not for Russian, at any rate. (My friend learned German by a “just translate” method, but German vocabulary is more similar to English.)
Now, with LingQ, I have a perfect way of learning vocabulary. Just using flash cards a little bit is better than not at all, of course. But the LingQ approach, of learning a word within a context - with a sample sentence, and within the context of a story, or a text, which I listen to many times - this works amazingly well for me. I am adding about 350 words a month to my vocabulary. These are real words, in Anki, not “LingQ words” (which are often just a word I already knew, but having a different ending). I paid for a year’s subscription to LingQ last January, with the goal of reaching 8,000 vocabulary words (in Anki) by the end of the year. I am quite sure that I will reach my goal. And my listening is improving, as well.
And why do I not spend a lot of time on production? Because I believe that vocab is more important (for now). I want to focus on my main goal. I already have basic listening and speaking skills, but without words, you really don’t know a language. And with words, everything else falls into place.